Automatic drilling device for underground coal mine

The utility model is suitable for the technical field of coal mining, and provides a coal mine underground automatic drilling device which comprises a bottom plate, a fixing frame, a drilling assembly, an elastic balance assembly and an adjusting assembly, and the drilling assembly is installed on t...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	HOU YUMING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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